Demountable rim for automobile-tires.



T. BRYANT.

DEMOUNTABLE mm FOR AUTOMOBILE TIRES.

APPLICATION FILED AUG-1,1916.

Patented Doc. -l, 191T,

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T. BRYANT.

DEIVIOUNTABLE RIM FOR AUTOMOBILE TIRES.

APPLICATION F LED AUG. M1915.

Patanted. Dec. 4, 1917.

llVl/E/V 70/6 Thoma 5 Bryan? A T T Y5 THOMAS similar, or san'rs MONICA, canrronnral DEMOUNTABLE RIM FOR AUTOMCBILE-TIRES eaner-is.

Specification of Letters Patent.

Patented Dec. 4:, 191?.

Application filed August 1, 1916. Serial No. 112,547.

To all whom it may concern:

Be it known that I, THOMAS BRYANT, a citizen of the United States, residing at Santa Moni ca, in the county of Los Angeles and State of California, have invented new and useful Improvements in Demountable Rims for :iutomobile-Tires, of which they follmving is a specification.

This invention relates to a rim for vehicle wheels and particularly pertains to a demountable rim for pneumatic tires for use upon automobile wheels.

It is an object of this invention to provide a demountablc tire rim which aliords easily operated means for positioning a pneumatic tire thereupon and for removing the same without damage to the the or tire stem.

Another object of this invention is to provide a demountable rim which will not require that the tire casing be stretched to place in position thereover and thus eliminates the use of specially constructed tire tools and the inconvenience incident to their use.

ltis another object to provide a demountable rim which may be simply and readily converted vtornse either with a straight bead tire case or a case having the customary clenoher beads engaging opposite sides of the inner periphery of the tire.

Another object is to provide a device of the above class which is so designed and constructed as to be interchangeable with tire rims of the ordinary construction and to be mounted upon the wheel folly with the same facility.

A further object is to provide locking means for securing the component parts of the tire rim in position, which means may be operated without special tools and will, when locked, remain in their locked position, until wilfully removed.

Other objects will appear hereinafter.

The invention is illustrated, by way of example, in the accompanying drawings, in which:

Figure 1 is a view in side elevation illustrating an automobile wheel and showing i with a pneumatic tire mounted upon the dcmountable rim with which this invention is concerned.

Fig. 2 is a view in vertical section taken transversely of the tire and telly as shown in Fig. 1 of the drawings, and illustrates the rim as arranged for the mounting of a straight head the casing.

Fig. 3 is a view in transverse vertical section similar to Fig. 2 except that the rim is adapted for use with cleneher tire casings.

Fig. 4 is a view in side elevation illustrating the rim as assembled and showing the disposition of the locking members therearound.

liig. 5 is an enlarged view in elevation and section illustrating the manner in which the complementary elements of the rim are locked together.

Fig. is a view in section as seen on the line 6-43 of Fig. 5 viewed in the direction of the arrows and illustrates the manner in which the locking member secures the component parts of the tire rim together.

Fig. 7 is a view in perspective disclosing the construction of the male rim member.

Fig. 8 is a view in perspective disclosing the construction of the female rim member and the provision for the reception of the tire stem.

Referring more particularly to the drawings, 10 indicates a vehicle wheel constructed with a folly 11 of common design. The i elly is provided with rim clamping bolts 12 having nuts 13 adapted to hold clamping lugs i l in their position as disposed around the wheel folly. The lugs 14, when in position, wedge beneath and rigidly support a demountable tire rim 15 with which the present invention is concerned.

The rim 15. is composed of an annular male body member 16 and an annular female body member 17 which interlock with each other and form the rim proper. The two body members 16a-nd 17 are formed with peripheral flanges upon opposite sides and are thus adapted to retain loose fitting clericher rings 18 and 19 by which the tire is engaged and secured upon the rim.

The body member 16 is formed with an annular tapered portion 20 which diverges from the inner edge of the member to a point adjacent the inner edge of the clencher ring 18. This portion is -adapted to be pressed into an internally tapered portion 21 formed upon the inner edge of the fe male member 17 and terminates at a point adjacent the inner edge of the ring 18. In this manner the inner edges of the two body members 16 and 17 overlap each other and bear against each other to form a. rigid as eter for the seating of o tire lljw. on. The tire 29,, as shown in Fig. is time ;i

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with straight, heed portions whiel ore engaged by perpendicularly U inner walls of the clenclier rings 18 em. and

are there held. by the pr .seure the flanges of the component body members. in 5 of: the drnwlngs, the tree is shown us Fig. having outwardly extending clencher which are engagd by the int-nrned i of the clencher rings 18 end 19, v having been inverted fr n the 31:: shown in 2. In this manner tlw 0ft l adapted to be readily cent with either strnight or clene m. i a

The (:lBl'iCll-BI' rings l8 and against the sides of the tire 2/2 by members 16 and 17 Which'in turn are in position by menns 0t olidnhie plates lhe locking plates are and conform to the inner periphery rim and are formed with slots 2 2.-

Which are adaptedto pass over lu s 7, preferably formed integral with the body members 16 and 17, neweotively. These lugs are'pr. sitioned along the adjacent inner edgesof the inembere l6 and 17 and formed with straight adjacent walls and inwardly tapered outer walls so that when they are together they will combine to form. a dovetail member around which n. compleinentury V-portimi oi the openings 2% and is adapted to be wedged. In th manner the two cc'nnponent ports of the rin'rere positively held together and may readily be separated. A series of sets of legs and 27 are forn'ied around the rims at em ll dis: tanccs from each other and thus ndeqnntely bind the rim parts together.

a means for preventing the straining of the tire stein. mounting within the tire tnhe when the tire placed upon the rim, '1. stem slot 28 is formed within the member 1G and a-stem slot 29 is formed within the member 17 and the two are adopted to around the stem from opposite sides and allow it to assume its proper position will out danger of damaging the tire tube.

In the operation, the clcncber rings are first positioned with their proper :"nces toward the tire body and the tire is then slipped upon the body member 17, after which the member 16 is forced into place within the member 17 and the clencher rings are properly drawn against the oppesite sidcs'of the tire casing. After this. the locking plates 23 are slipped over each set of lugs 26 and 27 and moved in the direction ie lay the arrow oin Fig. 53. This will bring the tapered side walls of the openings 24. end 25 into engagement with "the taper wells of the lugs 26 and 27 and will. thus hold the component rim members 16 and 17 against, separation. After the tire has been mounted upon. the rim and locked, it may he placed into e position upon the wheel felly and there secured by any preferred form of clamping lugs.

1 cell especial attention to the body of the rim eonipz'ising two complementary an- .nnnnr bends pusldy overlapping and wedgling together, mating dove-tail lugs extendimmrdly from the bands on opposite ne inner parting line, and locking plates fitting against the inner feces of the bends and having recesses through which the dove-mil lugs will and having dovet ensicn recesses in which the dovetail all in loge will edge and lock by moving the plat s ciimnnferentielly in the bands.

will thus be seen that the tire rim here provided readily operated and allows a tire to be positioned upon it without undue strain to any of the parts and further insures that an y type of tires may be mounted thereon Without alteration.

claim:

1. in n deinountable rim for pneumatic tires, two complementary annular bends partly overlapping; and Wedgi'ng together, mating dovetail rigs extending inwardly from the bands on opposite sides of the inner parting line, and locking plates fitting against the inner faces of the bends and having recesses through which the dove-tell lugs will nose and having dovetail exten" eion recesses H). which the dove-tail legs will wedgeand look by moving the plates circnnrlerentielly in the hands so as to hold the complementary bends rigidly together.

2. in a deznountnble rim, two complementery annular bands oppositely tapered, the

Lilli ta per of one bend fitting and Wedging withy Elli) 

